Perhaps you should try some spelling variations:
"literatura arabes e isla." » "literatura arabe e isla.", "literatura arte e isla.", "literature arab e isla.", "literatura arabes e islas.", "literatura arabes e islam.", "literatura arabes e isela."
"literatura de de isla." » "literatura de de islas.", "literatura de de islam.", "literatura de de isela.", "literatura de fe isla.", "literatura de di isla."
"literatura de de isaac." » "literatura de fe isaac.", "literatura de di isaac."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura arabes e isla.") or ((("literatura de de isla.") OR ("literatura de de isaac."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura arabes e isla.") OR ((("literatura de de isla.") OR ("literatura de de isaac.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura arabes e isla.\") or (((\"literatura de de isla.\") OR (\"literatura de de isaac.\"))))".
• Removing quotes may allow a broader search: (( literatura arabes e isla. ) or ((( literatura de de isla. ) OR ( literatura de de isaac. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura arabes e isla.") or ((("literatura de de isla.") OR ("literatura de de isaac."))))*.